Milestones

M1 (June 2025)

Initial crates.io release representing 18 months of work.

• Support for calc() values in CSS styles.
• object-fit and object-position properties.
• background-size, background-position, and background-repeat properties.
• Move DOM updating logic into blitz-dom
• Event handling refactor
• WGPU texture rendering (<canvas> support)

M2 (Sept 2025)

• Grid layout: named lines and areas
• Run WPT tests on every PR
• Devtools: Layout inspector
• ...and more

Backlog

Architecture

• Split media decoding into new blitz-media crate
• Simplify blitz-shell

Layout

• vertical-align
• text-wrap-mode
• position: fixed
• position: static
• Direction
• writing-mode
• z-index (non-direct siblings)
• Intrinsic sizing keywords (min-content, max-content, fit-content())
• "safe" alignment keywords
• Support align-content in Block layout taffy#709
• Floats
• CSS Subgrid layout
• Table improvements
  • border-collapse
  • table-layout: fixed
• calc values

Event handling

• Mouse events
• Scroll events
• Touch events
  • Gesture recognition on mobile for scrolling on pan
• Pointer events
• Keyboard events
• Change/Input events
• Submit event
• load/error/abort events
• Composition events
• Resize event
• Interaction (hover/click) for inline spans
• Event handling refactor

Browser UI

• Nested documents (enables: browser UI, devtools, iframes, dioxus for form controls)

Devtools

• Initial devtools protocol setup
• Layout inspector
• Style inspector
• Network inspector
• Console logger

Optimization (performance / memory usage / binary size)

• Paint culling for non-root-viewport
• Incremental box tree construction
• Port resvg to fontations
• Stop using taffy::Style
• DOM "event presence" optimisation (bitmap?)
• Fix known memory leaks
  • Anonymous nodes
  • Parley font names

DOM

• Details/Summary
• Popover API
• <meta> refresh
• <template> elements
• Shadow DOM
• Form controls
  • Password input
  • <select>
  • File input
  • Radio button
  • Checkbox
  • Text input
  • Textarea
• <title>

Accessibility

• Incremental updates
• Better text input support
• Support for aria attributes
• Responding to events

Rendering

• clip-path
• mask
• Filters and blurs
• Table row backgrounds
• Box shadows (blocked on Drop shadows linebender/vello#640)
  • Support for non-uniform border-radii

Dioxus Native integration

• Integrate with CLI
• Better event handling (prevent default, generated events)
• Low-level access to DOM

HTML/Markdown renderer ("readme")

• List bullets rendering
• Checkbox rendering
• Live reload
• Clickable links
• Syntax highlighting
• Packaged/published binaries